diff options
| author | Matteo Croce <mcroce@redhat.com> | 2019-10-24 19:24:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-10-28 13:44:26 -0700 |
| commit | a0c78337dd3a4900bc8628a511131b5a0b1db42a (patch) | |
| tree | 702fa3ce30da52c3e976efd43f3134777ad80dcd /drivers/ide/piix.c | |
| parent | e1921168bbd4810de4197446e52f652cd0dd9541 (diff) | |
mvpp2: prefetch frame header
When receiving traffic, eth_type_trans() is high up on the perf top list,
because it's the first function which access the packet data.
Move the DMA unmap a bit higher, and put a prefetch just after it, so we
have more time to load the data into the cache.
The packet rate increase is about 14% with a tc drop test: 1620 => 1853 kpps
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ide/piix.c')
0 files changed, 0 insertions, 0 deletions